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Bayesian analysis of pentaquark signals from CLAS data.

Authors :
Ireland DG
McKinnon B
Protopopescu D
Ambrozewicz P
Anghinolfi M
Asryan G
Avakian H
Bagdasaryan H
Baillie N
Ball JP
Baltzell NA
Batourine V
Battaglieri M
Bedlinskiy I
Bellis M
Benmouna N
Berman BL
Biselli AS
Blaszczyk L
Bouchigny S
Boiarinov S
Bradford R
Branford D
Briscoe WJ
Brooks WK
Burkert VD
Butuceanu C
Calarco JR
Careccia SL
Carman DS
Casey L
Chen S
Cheng L
Cole PL
Collins P
Coltharp P
Crabb D
Crede V
Dashyan N
De Masi R
De Vita R
De Sanctis E
Degtyarenko PV
Deur A
Dickson R
Djalali C
Dodge GE
Donnelly J
Doughty D
Dugger M
Dzyubak OP
Egiyan KS
El Fassi L
Elouadrhiri L
Eugenio P
Fedotov G
Feldman G
Fradi A
Funsten H
Garçon M
Gavalian G
Gevorgyan N
Gilfoyle GP
Giovanetti KL
Girod FX
Goetz JT
Gohn W
Gonenc A
Gothe RW
Griffioen KA
Guidal M
Guler N
Guo L
Gyurjyan V
Hafidi K
Hakobyan H
Hanretty C
Hassall N
Hersman FW
Hleiqawi I
Holtrop M
Hyde-Wright CE
Ilieva Y
Ishkhanov BS
Isupov EL
Jenkins D
Jo HS
Johnstone JR
Joo K
Juengst HG
Kalantarians N
Kellie JD
Khandaker M
Kim W
Klein A
Klein FJ
Kossov M
Krahn Z
Kramer LH
Kubarovsky V
Kuhn J
Kuleshov SV
Kuznetsov V
Lachniet J
Laget JM
Langheinrich J
Lawrence D
Livingston K
Lu HY
Maccormick M
Markov N
Mattione P
Mecking BA
Mestayer MD
Meyer CA
Mibe T
Mikhailov K
Mirazita M
Miskimen R
Mokeev V
Moreno B
Moriya K
Morrow SA
Moteabbed M
Munevar E
Mutchler GS
Nadel-Turonski P
Nasseripour R
Niccolai S
Niculescu G
Niculescu I
Niczyporuk BB
Niroula MR
Niyazov RA
Nozar M
Osipenko M
Ostrovidov AI
Park K
Pasyuk E
Paterson C
Pereira SA
Pierce J
Pivnyuk N
Pogorelko O
Pozdniakov S
Price JW
Procureur S
Prok Y
Raue BA
Ricco G
Ripani M
Ritchie BG
Ronchetti F
Rosner G
Rossi P
Sabatié F
Salamanca J
Salgado C
Santoro JP
Sapunenko V
Schumacher RA
Serov VS
Sharabian YG
Sharov D
Shvedunov NV
Smith LC
Sober DI
Sokhan D
Stavinsky A
Stepanyan SS
Stepanyan S
Stokes BE
Stoler P
Strauch S
Taiuti M
Tedeschi DJ
Tkabladze A
Tkachenko S
Tur C
Ungaro M
Vineyard MF
Vlassov AV
Watts DP
Weinstein LB
Weygand DP
Williams M
Wolin E
Wood MH
Yegneswaran A
Zana L
Zhang J
Zhao B
Zhao ZW
Source :
Physical review letters [Phys Rev Lett] 2008 Feb 08; Vol. 100 (5), pp. 052001. Date of Electronic Publication: 2008 Feb 06.
Publication Year :
2008

Abstract

We examine the results of two measurements by the CLAS collaboration, one of which claimed evidence for a Theta(+) pentaquark, while the other found no such evidence. The unique feature of these two experiments was that they were performed with the same experimental setup. Using a Bayesian analysis, we find that the results of the two experiments are in fact compatible with each other, but that the first measurement did not contain sufficient information to determine unambiguously the existence of a Theta(+). Further, we suggest a means by which the existence of a new candidate particle can be tested in a rigorous manner.

Details

Language :
English
ISSN :
0031-9007
Volume :
100
Issue :
5
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
18352361
Full Text :
https://doi.org/10.1103/PhysRevLett.100.052001